Ooof that sad to hear you brother did that
Torture ideas
1.Make him write a book then post it if it really bad and don't take it down
2. Make him watch videos on stuff he fear or if the stuff available to do like finding a spider and put it in his bed
3. Cook really nasty food and make him eat it
4. Burn all his clothes
5. If he has video games with saved data delete the data or trade all his items
6. Throw bed sheets and pillow and clothes in the mud/rain
7. Make him watch uncensored surgery video,( that will make almost ever one scared)
8. Make him copy a whole dictionary by hand
9.make him write I never do that again x amount of times
10.hid in his closet at night then when he slept write on his face then get an airhorn or any load noise, then some how set a time that will go of or an action that will cause it to go off while you not in the room and when he wake up tell him that you did not hear the noise and some how set it again and he would think he starting to go crazy
11. Or just lock him out side of the house
These are some of the worst one I can think of, have fun